Motorcycle Engine Part Air Cylinder Block For YZ450F YFZ450 YFZ450R WR450F YZ450 WR450 YZ YFZ WR 450 Material: Aluminium OEM Code: Compatible with models 2S2-11311-00-00, 2S2-11311-10-00, 2S2-11311-11-00, 2S2-11311-20-00, 2S2-11311-30-00 Design: Special and performance features Durability: Capable of withstanding extreme temperatures up to 105℃ Certification: ISO9001 certified for external testing Compatibility: Specifically designed for YZ450F, YFZ450, YFZ450R, WR450F, and YZ450 WR450 models The Air Cylinder Block is designed to enhance engine performance for 450 YZ models.Constructed from aluminium , the cylinder block offers a lightweight yet solution suitable for demanding riding conditions.Its design supports stable under thermal loads, maintaining consistent power output.engineered to match specifications, this cylinder block fits directly into compatible 450cc models, including YZ450F, YFZ450, YFZ450R, WR450F, and YZ450 WR450.The ISO9001 certification confirms compliance with established quality standards for external testing, product consistency.Installation is straightforward, serving as a direct replacement for existing units.With broad model compatibility, it integrates without altering the motorcycle's configuration.This cylinder block delivers improved engine efficiency and dependable performance for on-road and off-road applications.